| /* |
| * Copyright 2016 The WebRTC Project Authors. All rights reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #import <AVFoundation/AVFoundation.h> |
| #import <Foundation/Foundation.h> |
| |
| NS_ASSUME_NONNULL_BEGIN |
| |
| extern const int kRTCAudioSessionPreferredNumberOfChannels; |
| extern const double kRTCAudioSessionHighPerformanceSampleRate; |
| extern const double kRTCAudioSessionLowComplexitySampleRate; |
| extern const double kRTCAudioSessionHighPerformanceIOBufferDuration; |
| extern const double kRTCAudioSessionLowComplexityIOBufferDuration; |
| |
| // Struct to hold configuration values. |
| @interface RTCAudioSessionConfiguration : NSObject |
| |
| @property(nonatomic, strong) NSString *category; |
| @property(nonatomic, assign) AVAudioSessionCategoryOptions categoryOptions; |
| @property(nonatomic, strong) NSString *mode; |
| @property(nonatomic, assign) double sampleRate; |
| @property(nonatomic, assign) NSTimeInterval ioBufferDuration; |
| @property(nonatomic, assign) NSInteger inputNumberOfChannels; |
| @property(nonatomic, assign) NSInteger outputNumberOfChannels; |
| |
| /** Initializes configuration to defaults. */ |
| - (instancetype)init NS_DESIGNATED_INITIALIZER; |
| |
| /** Returns the current configuration of the audio session. */ |
| + (instancetype)currentConfiguration; |
| /** Returns the configuration that WebRTC needs. */ |
| + (instancetype)webRTCConfiguration; |
| /** Provide a way to override the default configuration. */ |
| + (void)setWebRTCConfiguration:(RTCAudioSessionConfiguration *)configuration; |
| |
| @end |
| |
| NS_ASSUME_NONNULL_END |